Abstract: scale pipe
flowmeter measurement principle of information produced by excellent
flow meter, flow meter manufacturer to offer you the quotation.
Tdown for beam in the reverse direction of propagation time T = Tup Tdown set the speed of sound in the static fluid for c, the speed of fluid flow for u, propagation distance L, when the sound wave and fluid flow in the same direction (
The downstream direction)
, its propagation speed is c + u;
On the other hand, the transmission speed.
More flow meter manufacturers choose model price quote you are welcome to inquire, here is a pipe flow meter scale for measuring principle, the article details.
Tdown for beam in the reverse direction of propagation time & Delta;
T =公羊,
Tdown set the speed of sound in the static fluid for c, the speed of fluid flow for u, propagation distance L, when the sound wave and fluid flow in the same direction (
The downstream direction)
, its propagation speed is c + u;
On the other hand, the transmission speed to c -
u。
In the distance of the two respectively for L put two groups of ultrasonic generator and receiver (
T1, R1)
And (
T2,R2)
。
When T1 suitable direction, T2 inverse direction of launch ultrasonic wave, ultrasonic wave, respectively, the time required to reach the receiver R1 and R2 for T1 and T2, T1 = L/(
c+u)
;
t2=L/(
c -
u)
Because in industrial pipes, fluid velocity, much smaller than sound, namely c>>
U, so both time for del t = t2 -
T1 = 2 lu/cc, therefore, when the sound waves in the fluid velocity c, known as long as the measured time del t can calculate the velocity of u, and then to calculate flow rate Q.
The method of using the principle of flow measurement is called time difference method.
Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.
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